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Solvent-free polyurethane self-leveling floor topcoat and preparation process thereof

A solvent-free polyurethane and solvent-free technology, applied in the field of coatings, can solve the problems of difficult drying, easy discoloration, chalking, and limiting the use range of floors, and achieve excellent drying performance, eliminate surface bubbles, and improve the effect of anti-settling stability.

Active Publication Date: 2020-08-07
石家庄市油漆厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the floors in the market are mainly epoxy floors. Epoxy floors have high hardness and poor flexibility, and are prone to discoloration and powdering under ultraviolet radiation, and are difficult to dry at low temperatures. The scope of use of the floor

Method used

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  • Solvent-free polyurethane self-leveling floor topcoat and preparation process thereof
  • Solvent-free polyurethane self-leveling floor topcoat and preparation process thereof
  • Solvent-free polyurethane self-leveling floor topcoat and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0040] The weight composition of solvent-free hydroxy alkyd resin raw materials is shown in the following table:

[0041]

[0042] The solvent-free hydroxy alkyd resin of embodiment 1-3 is prepared by the following steps:

[0043] Step a: Add castor oil into the reaction kettle, stir and heat up to 200°C, stop stirring and add catalyst, when stirring continues to heat up to 210°C, stop stirring and add glycerin, start stirring and heat up to 225±2°C, keep the temperature for 1h;

[0044] Step b: Cool down to 160°C, stop stirring, add adipic acid and petroleum xylene, and fill the water separator with petroleum xylene;

[0045] Step c: raise the temperature to 225±2°C, measure the acid value after 3 hours of heat preservation, and vacuumize when the acid value drops below 1;

[0046] Step d: vacuumize and cool down when the solid content reaches 99% or more, cool down to 60°C and filter with 120-mesh silk cloth to obtain a solvent-free hydroxy alkyd resin.

[0047] The sol...

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Abstract

The invention provides a solvent-free polyurethane self-leveling floor finish, comprising component A and component B, wherein component A is composed of the following raw materials in parts by weight: 40-60 parts of solvent-free hydroxy alkyd resin, dispersant 0.4-1.0 parts, 0.8-1.7 parts of defoamer, 3-5 parts of titanium dioxide, 0.1-1 parts of carbon black, 0.1-0.5 parts of fumed silica, 0.5-1 parts of organic bentonite, 3-10 parts of powdered molecular sieves, Silica powder 20-30 parts, wherein component B is: aliphatic isocyanate polymer. The solvent-free polyurethane self-leveling floor finish has excellent strength, weather resistance and wear resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a solvent-free polyurethane self-leveling floor finish, and at the same time, the invention also relates to a preparation process of the coating. Background technique [0002] At present, the floors in the market are mainly epoxy floors. Epoxy floors have high hardness and poor flexibility, and are easy to change color and pulverize under the irradiation of ultraviolet rays, and are difficult to dry at low temperatures. This is a serious limitation. The scope of use of the floor. Polyurethane floor not only has excellent elasticity and weather resistance, but also can be dried at low temperature. Contents of the invention [0003] The invention provides a solvent-free polyurethane self-leveling floor finish, which has excellent elasticity, dryness, impact resistance, abrasion resistance and weather resistance. [0004] A solvent-free polyurethane self-leveling floor finish, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D7/61C09D7/65C08G18/42C08G63/49
CPCC08G18/4288C08G63/48C08K3/04C08K3/346C08K3/36C08K2003/2241C09D175/06
Inventor 祁佩杨宁王勋韩小鹏何路杨左万杰
Owner 石家庄市油漆厂
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